HdyViewSwitcher: Icons size and page tiles
Setting the view switcher's icon size isn't very useful, unless no page has a title.
I suggest to deprecate the ability to set the icon size, and use a larger icon size when no page of the stack has a title.
We wouldn't present that as a feature but more as error handling, though I fear people would purposefuly drop useful accessibilty info like titles only to trigger that side-effect.